Rotary drier.



PATENTBD JAN. 8, 1907.

No. 840,602. 7 w

A. BERG.

ROTARY DRIER. APPLIOATION FILED FEB. 3. 1906.

THE "cums PETERS c0., WASHINGTON, n. cv

' UNIT D STATES PATENT OFF OE.

ANTON BERG, OF ANDERSON, INDIANA.

ROTARY DRIER.

Specification of Letters Patent.

:Patented Jan. 8, 319.037,

Application filed February 3, 1906. Serial No. 299,282.

Canada, have made certain new and useful Improvements in Rotary Driers and Ihereb y declare that the following is a full, clear, and exact description of the same.

This'inventionrelates to a rotary drier comprising a tubular drying-cylinder inclosed by a steam-jacket and having journals mounted to revolve 1n suitable bearings, a feedmg mechanism arranged 'to deliver the material to be dried into the drying-cylinder as it revolves, means for supplying steam to the steam-space between the steam-jacket and drying-cylinder and exhausting it therefrom, radiator-pipes within the drying-cylinder and connected with the steam-space, and means for imparting a rotary motion to the drier, the whole being constructed, arranged, and operated as hereinafter more fully set forth, and illustrated in the accompanying drawings, in which Figure 1 is alongitudinal section, and Fig. 1 is a transverse section, of the apparatus.

Figs. 2 and 3 are end elevations of the same.

Fig. 4 is a sectional view of an alternative means-for connecting the radiator-pipes with the steam-space. Fig. 5 is a-sectional view of one of the couplings for the steam-pipes .and journals.

Like letters of reference refer to like parts throughout the specification and drawings.

Contained within the steam-jacket a is a tubular drying-cylinder b, and formed between them is a steam-space 0. Closing the ends of the steam-space c are annular plates (1 and i, having radial arms 01 and t, terminating in centrally-located journals d and t through which and the radial arms are formed steampassages d and i 'to communicate with the steam-space c. The journals d and ,il/ ings g and g, and fixed upon the journal L is a gear-wheel j, which meshes with a pinionwheel 14, fixed upon the counter shaft Z,

driven by a pulley m. The ends of the journals t and d are revolubly connected with the adjacent ends of the stationary steam are mounted to revolve in suitable bear-.

and exhaust pipes n and n, so that thesteam may flow from the steam-pipe 'n'throu'glh .the steam-passage i into the steam-space c and then out throughthe steam-passage d 'tothe exhaust-pipe n to heat the drying-cylinder b. To prevent the escape of the steam atthe joints between the ends of the journals and the steam and exhaust pipes, the pipes n and n have semispherical collars or sockets 0 to enlargements or balls 1, fitted on the exten sions' (Z t of the journals (1 and i. Movably mounted upon the extensions (1 of the journals d and t are collars u, o ,posed to the adjacent ends of the semisp erical collars, and interposedbetween and contacting the collars 0 and u are antifriction balls "25. 'Fixed upon the extensions d and '5 are co'llars w, and bearing against the collars wand u. are compression-springs c, which forcibly press the movable collars utoward the coupling-collars '0 to hold the inner faces of the coupling-collars 0 tightly against the spherical enlargements of the steam and exhaust pipes and prevent the escape of the steam at those joints. At the receiving end of the drying-cylinder b is a feed-box 0" to deliver the material to be dried into the cylinder.

inwardly curved to allow the feed-box to roiject slightly into the drying-cylinder, so that the material may be delivered directly 'into it, and the radial arms d at the opposite ends of the drier are outwardly curved to allow of the unobstructedde'livery of the dried material from the dry ing-cylinder when it reaches its delivery end.

The drier has a downward inclination from the receiving to the delivery end, and owing to this inclination the bearing g at "the delivery end of the drier will be sub'jectto a greater or less amount of end thrust. 'To compensate for the end thrust,the journal '41 has :a .fixed annular shoulder e, and encircling "the journal t between the shoulder e and the adjacent bearing g is athrust-ring e, and interposed between the thrust-ring e and the shoulder e are antifriction-ballsf 'Enc'ircling the steam-jacket a is an annular bearing-ring h, revoluhly contacting an idler p, mounted to revolve in a bearing q. Contained within the drying-cylinder are radiator-pipes 2, connected with the steam-space revolubly inclose the correspondingly-shaped The radial arms'i at one end of the drier are 0 of the jacket, as shown in Fig. 1, or with the l drying-cylinder, annular end plates closing steam-channels i d of the radial arms, as shown in Fig. 4. These radiator-pipes are in constant contact with the contents of the drying-cylinder as the latter revolves and directly transmit their heat units to the.ma.

terial therein. Motion is transmitted by the pinion 70 from the counter-shaft l to the gearwheel which is fixed upon the journal t to cause the revolution of the journal and the drying-cylinder. r The steam circulates from the steam-pipe 1a through the steam-passage i into the steam-space c, from which it'passes through the steam-p assages d to the exhaustpipe 72/, and during its circulation through the steam-space heats the drying-cylinder b, so that 'the radiated heat units can be employed for drying the material therein. The material to be dried passes through the feedbox 0 and is discharged from the feed-box into the receiving end of the drying-cylinder. The revolution of the drying-cylinder?) agitates the material, so that it will readily absorb the heat units radiated from the surface of the drying-cylinder and the radiator-pipes as it gradually moves toward the delivery end of the same, from which it is discharged through the radial arms (1 into the receptacles placed to receive it.

Having thus fully described my invention, what I claim as new, and desire to secure by I Letters Patent, is

'- 1. In a rotary drier the combination of the I drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam-jacket, radial arms for the end plates having centrally-located journals with steam-passages, through the journals, arms and end plates, communicating with the steam-space, steam and exhaust e pipes communicating with said steam-passages,'means for revolubly coupling the journals to the steam and exhaust pipes and means for revolving the drier.

2.1 In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and stecm-jacket, radial arms for the end plates having centrally-located journals with steam-p assages, through the journals, arms and end plates, communicating with the steam-space, steam and exhaust pipes communicating with said steam-pas sages, means for revolubly coupling the journals to the steam and-exhaust pipes compris ing spherical coupling-collars on the steam and exhaust pipes and spherical enlarge ments for extensions of the ends of the journals revolublycontained in the coupling-collars and means for revolving the drier.

3. In a rotary drier the combination of the drying-cylinder, a steam-j acket inclosing the for the end plates having centrally-located journals with steam-passages, through the ournals, arms and end plates, communicating with the steam-space, steam and exhaust pipes communicating with saidstcam-passages, means for revolubly coupling the journals to the steam and exhaust pipes comprising spherical coupling-collars on. the steam and exhaust pipes, spherical enlargements for the extension of the ends of the journals revolubly contained in the coupling-collars, movable collars loosely encircling the extensions and stationary collars fixed thereto, compression-springs interposed between. the movable and stationary collars and means for causing the revolution of the drier.

4. In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam-jacket, radial arms for the end plates having central]y-located journals with steam-passages, through the journals, arms and end plates, communicating with the steam-space, steam and exhaust pipes comnnmicating with said steam-pas sages, means for revolubly coupling the ournals to the steam and exhaust pipes, comprising couplingcollars on the steam and exhaust pipes, spherical enlargements for the extensions of the ends oi the journals revolubly contained in the coupling-collars, movable collars loosely encircling the extensions and stationary collars fixed thereto, compression-springs interposed between themovable and stationary collars, antii'riction-balls interposed between the movable and coupling collars, and means for causing the revolution of the drier.

5. In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam-jacket, radial arms for the end plates having centrally-located journals with steam-passages, through the journals, arms and end plates communicating with the steam-space, steam and exhaust pipes communicating with the steaan-passages, means for revolubly coupling the journals to the steam and exhaust pipes comprising coupling-collars on the steam and exhaust pipes, spherical enlargements for the extenslons ol the ends of the ournals revolubly contained in the coupling-collars, movable collars loosely encircling the extensions and stationary collars fixed thereto, compression-springs interposed between the movable and stationary collars, antih'iction-balls interposed between the movable and coupling collars, means for causing the revolution oi the drier, a fixedshoulder for the journal at the receiving end of the drier, a thrust-ring interposed between the shoulder and adja-' cent bearing, antifrictio'mballs interposedba,

tween the shoulder and thrust-ring and means for causingthe revolution of the drier.

6. In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam-jacket, radial arms for the end plates having centrally-located journals with steam-passages, through the journals, arms and end plates, communicating with the steam-space, steam and exhaust pipes communicatin with said steam-passages, means for revo ubly coupling the journals to the steam and exhaust pipes, meansfor revolving the drier, and a feed-box at the receiving end of the drying-cylinder to deliver the material into the drying-cylinder.

7. In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam-jacket, radial arms for the end plates having centrally-located journals with steam-passages, through the journals, arms and end plates, communicating with the steam-space, steam and exhaust pipes communicating with the steam-passa es, means for revolubly coupling the journals to the steam and exhaust pipes comprising s herical coupling collars on the steam an exhaust pipes, spherical enlargements for extensions of the ends of the journals revolubly contained in the coupling-collars, means for revolving the drier, and a feedgox at the receiving end of the drying-cylin- 8. In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam-jacket, radial arms for the end plates having centrally-located journals with steampassages through the journals, arms and end plates communicating with the steam-space, steam and exhaust pipes. communicating with said steam-passages,'means for revolubly coupling the journals to the steam and exhaust pipes comprising coupling-collars on the steam and exhaust pipes, spherical enlargements for the extensions of the ends of the journals revolubly contained in the coupling-collars, movable collars loosely encircling the extensions and stationary collars fixed thereto, compression-springs interposed between the movable and stationary collars, means for causing the revolution of the drier, and a feed-box at the receiving end of the drying-cylinder.

9. In a rotary drier the combination of the drying-cylinder, a steam-jacket inclosing the drying-cylinder, annular end plates closing the ends of the steam-space between thedrying-cylinder and steam-jacket, radial arms for the end plates having centrally-located journals -with steampassages, through the journals, arms and end plates, communicating with the steam-space, steam and exhaust pipes communicating with said steam pas sages means for revolubly coupling the 'our-' the drying-cylinder, a steam-jacket inclosing "the drying-cylinder, annular end plates closing the ends of the steam-space between the drying-cylinder and steam jacket, radial arms for the end plateshaving centrally-located journals with steampassages through the journals, arms and end plates, communicating with the steam-space, steam and exhaust pipes communicating with the steampassages, means for revolubly coupling the journals to the steam and exhaust pipes comprising coupling-collars on the steam and exhaust pipes, spherical enlargements for the extensions of the ends of the journals revolubly contained in the coupling-collars, movable collars loosely encircling the extensions and stationary collars fix'ed thereto, compression-springs interposed between the movable and stationary collars, antifriction-balls inter osed between the movable and coupling col ars, means for causing the revolution of the drier, a fixed shoulder for the journal at the receiving end of the drier, a thrust-ring interposed between the shoulder and adja cent bearing, antiiriction-balls interposed between the shoulder and thrust-ring, and a feed-box at the receiving end of the dryingcylinder. 7

1 1-. A rotary drier comprising an inner casing, an 'outer casing inclosing the inner casing to form a steam-space between them, plates connected to the inner and outer casings to close the ends of the steam-space, hollow arms connected with the plate at one end of the drier and curved inwardly into the inner casing, a hollow journal connected with the arms and projecting beyond the adjacent end of said casing, hollow arms connected with the plate at the other end of the drier and curved outwardly therefrom, and a hollow journal connected with last-mentioned arms.

cylinder composedlof an inner casing'hav'ing and said-space between the inner ond'outer 512. A rotary :drier -.oomprising e dryingpassages therein'connected with the journals, 10

both its endsopen, anloutencesing inolosing casings, nndsteem-pipes within the cylinder Lthe lnnencasing with an unoccupied space connected withthe steam-space. between 'the outer and inner casings, end Toronto, Janua,ry 26, A. D. 1906.

plates connected vto Che innerend outer cas- ANTON BERG.

Eings foo close theiends-of said space, journals In'presenoe 0ffor the drying-cylinder having steam-pes- C. H. RIOHES. sagestherethrough, hollow arms with steam- L. F. BROOK. W 

